Review: Intel Core i5-3570K (22nm Ivy Bridge)

The one to go for?

Chip giant Intel launched its 3rd Generation Core chips on Monday. Previously known by the codename of Ivy Bridge, these new processors add a touch more CPU speed and around 30 per cent extra graphics performance over that exhibited by price-comparable 2nd Generation Core models hewn from Sandy Bridge silicon.

While manufacturing concerns don't mean a great deal to the average consumer, Intel is using a 22nm, Tri-Gate process for these new chips. This should mean they're cheaper to produce and consume less power than 2nd Generation Core processors. We reviewed the top-of-the-range Core i7-3770K on launch day, though you shan't be able to purchase one until Monday 30th April, such is Intel's wont.

The Daddy chip's retail pricing is set to be around £230 and, while relatively inexpensive in the grand scheme of Intel processors, the bulk of 3rd Generation Core sales are sure to occur at lower price points. Going back a generation we reckoned that the four-core, four-threaded Core i5-2500K was a good bet, priced at around £160, as it provided solid performance for both everyday tasks and gaming. The equivalent 3rd Generation Core chip is the Core i5-3570K, due to be available for the same sort of money, so it's well worth a good look.

Where does it fit in?

Model

Cores /
Threads

CPU Clock
(MHz)

Turbo Boost
(MHz)

Process

Die Size

Cache

IGP

IGP Clock
(MHz)

DDR3 Support

TDP

Price
(US 1ku)

Ivy Bridge Core Processor Family (3rd Generation, LGA1155)

Core i7-3770K

4 / 8

3.50

3.90

22nm

160mm²

8MB

HD 4000

1,150

Dual 1,600

77W

$313

Core i7-3770

4 / 8

3.40

3.90

22nm

160mm²

8MB

HD 4000

1,150

Dual 1,600

77W

$278

Core i7-3770S

4 / 8

3.10

3.90

22nm

160mm²

8MB

HD 4000

1,150

Dual 1,600

65W

$278

Core i7-3770T

4 / 8

2.50

3.70

22nm

160mm²

8MB

HD 4000

1,150

Dual 1,600

45W

$278

Core i5-3570K

4 / 4

3.40

3.80

22nm

160mm²

6MB

HD 4000

1,150

Dual 1,600

77W

$212

Core i5-3550

4 / 4

3.30

3.70

22nm

160mm²

6MB

HD 2500

1,150

Dual 1,600

77W

$194

Core i5-3550S

4 / 4

3.00

3.70

22nm

160mm²

6MB

HD 2500

1,150

Dual 1,600

65W

$194

Core i5-3450

4 / 4

3.10

3.50

22nm

160mm²

6MB

HD 2500

1,100

Dual 1,600

77W

$174

Core i5-3450S

4 / 4

2.80

3.50

22nm

160mm²

6MB

HD 2500

1,100

Dual 1,600

65W

$174

Sandy Bridge Extreme Core Processor Family (2nd Generation, LGA2011)

Core i7-3960X

6 / 12

3.30

3.90

32nm

434mm²

15MB

N/A

N/A

Quad 1,600

130W

$999

Core i7-3930K

6 / 12

3.20

3.80

32nm

434mm²

15MB

N/A

N/A

Quad 1,600

130W

$583

Core i7-3820

4 / 8

3.60

3.90

32nm

294mm²

10MB

N/A

N/A

Quad 1,066

130W

$294

Sandy Bridge Core Processor Family (2nd Generation, LGA1155)

Core i7-2700K

4 / 8

3.50

3.90

32nm

216mm²

8MB

HD 3000

1,350

Dual 1,333

95W

$332

Core i7-2600K

4 / 8

3.40

3.80

32nm

216mm²

8MB

HD 3000

1,350

Dual 1,333

95W

$317

Core i7-2600

4 / 8

3.40

3.80

32nm

216mm²

8MB

HD 2000

1,350

Dual 1,333

95W

$294

Core i7-2600S

4 / 8

2.80

3.80

32nm

216mm²

8MB

HD 2000

1,350

Dual 1,333

65W

$294

Core i5-2500K

4 / 4

3.30

3.70

32nm

216mm²

6MB

HD 3000

1,100

Dual 1,333

95W

$216

Core i5-2500

4 / 4

3.30

3.70

32nm

216mm²

6MB

HD 2000

1,100

Dual 1,333

95W

$205

Core i5-2500S

4 / 4

2.70

3.70

32nm

216mm²

6MB

HD 2000

1,100

Dual 1,333

65W

$205

Core i5-2500T

4 / 4

2.30

3.30

32nm

216mm²

6MB

HD 2000

1,250

Dual 1,333

45W

$205

Shamelessly ripping off the table in the original review, we can discern at least three differences between the mid-pack Core chips of the two Intel families. Priced within a few dollars of each other, the 3570K is clocked in a little higher, both in term of base and Turbo Boost speeds, has the same-clocked graphics as the top-line part - Core i5-2500K's are clocked in lower than 2700K's - and 3570K ships with a lower TDP than its Sandy Bridge counterpart. These factors alone make it, on paper, a better buy than its predecessor. Do be aware that Intel has quietly slipped in the Core i5-2550K, which is clocked in at the same speeds as the Core i5-3570K, albeit without the goodness of integrated graphics. And we thought Intel had simplified its line-up!

The Core i5-3570K is arguably a more-important chip than the Core i7-3770K, mainly because its lower price point makes it more attractive to enthusiasts on a (relative) budget and to system integrators (SIs) looking to hit the all-important £999 price point for a well-specified base unit. The K nature of the processor means that it's multiplier-unlocked, enabling simple overclocking by increasing the CPU ratio (multiplier), and it's by this method that SIs release pre-overclocked machines.

The two questions we need to answer in this review go something like this: how much better is the Core i5-3570K than the much-used, popular Core i5-2500K, and is the gap large enough to persuade owners of relatively new systems to jump ship and opt for the shiniest technology Intel has to offer? Let's find out.